GHA: skip updating man-db for faster installs (Ubuntu)

This step could take from 5 seconds to 5 minutes, sometimes making it
run out of its time slot. It affected 60 CI jobs.

Saving an estimated minimum of 5 minutes per CI run.

Also fixing:
```
Fri, 25 Apr 2025 06:19:14 GMT
Processing triggers for man-db (2.12.0-4build2) ...
Fri, 25 Apr 2025 06:23:40 GMT
Running kernel seems to be up-to-date.
[...]
Error: The action 'install packages' has timed out after 5 minutes.
```
Ref: https://github.com/curl/curl/actions/runs/14658212268/job/41136971525?pr=17180#step:2:169

Closes #17181

.github/workflows/checkdocs.yml

@@ -47,6 +47,7 @@ jobs:
   #        run: |
   #          sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
   #          sudo apt-get -o Dpkg::Use-Pty=0 update
+  #          sudo rm -f /var/lib/man-db/auto-update
   #          sudo apt-get -o Dpkg::Use-Pty=0 install python3-proselint
   #
   #      # config file help: https://github.com/amperser/proselint/

.github/workflows/checksrc.yml

@@ -57,6 +57,7 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get -o Dpkg::Use-Pty=0 update
+          sudo rm -f /var/lib/man-db/auto-update
           sudo apt-get -o Dpkg::Use-Pty=0 install \
             codespell python3-pip python3-networkx python3-pydot python3-yaml \
             python3-toml python3-markupsafe python3-jinja2 python3-tabulate \

.github/workflows/configure-vs-cmake.yml

@@ -128,7 +128,9 @@ jobs:
       TRIPLET: 'x86_64-w64-mingw32'
     steps:
       - name: 'install packages'
-        run: sudo apt-get -o Dpkg::Use-Pty=0 install mingw-w64
+        run: |
+          sudo rm -f /var/lib/man-db/auto-update
+          sudo apt-get -o Dpkg::Use-Pty=0 install mingw-w64
 
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
         with:

.github/workflows/distcheck.yml

@@ -178,6 +178,7 @@ jobs:
       - name: 'install prereqs'
         run: |
           if [[ '${{ matrix.image }}' = *'ubuntu'* ]]; then
+            sudo rm -f /var/lib/man-db/auto-update
             sudo apt-get -o Dpkg::Use-Pty=0 install libpsl-dev libssl-dev
           else
             brew install libpsl openssl

.github/workflows/http3-linux.yml

@@ -140,6 +140,7 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get -o Dpkg::Use-Pty=0 update
+          sudo rm -f /var/lib/man-db/auto-update
           sudo apt-get -o Dpkg::Use-Pty=0 install \
             libtool autoconf automake pkgconf stunnel4 \
             libpsl-dev libbrotli-dev libzstd-dev zlib1g-dev libev-dev libc-ares-dev \
@@ -332,6 +333,7 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get -o Dpkg::Use-Pty=0 update
+          sudo rm -f /var/lib/man-db/auto-update
           sudo apt-get -o Dpkg::Use-Pty=0 install \
             libtool autoconf automake pkgconf stunnel4 \
             libpsl-dev libbrotli-dev libzstd-dev zlib1g-dev libev-dev libc-ares-dev \

.github/workflows/linux.yml

@@ -301,6 +301,7 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get -o Dpkg::Use-Pty=0 update
+          sudo rm -f /var/lib/man-db/auto-update
           sudo apt-get -o Dpkg::Use-Pty=0 install \
             libtool autoconf automake pkgconf \
             ${{ !contains(matrix.build.install_steps, 'skipall') && !contains(matrix.build.install_steps, 'skiprun') && 'stunnel4' || '' }} \
@@ -315,6 +316,7 @@ jobs:
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo dpkg --add-architecture i386
           sudo apt-get -o Dpkg::Use-Pty=0 update
+          sudo rm -f /var/lib/man-db/auto-update
           sudo apt-get -o Dpkg::Use-Pty=0 install \
             libtool autoconf automake pkgconf stunnel4 \
             libpsl-dev:i386 libbrotli-dev:i386 libzstd-dev:i386 \

.github/workflows/non-native.yml

@@ -439,6 +439,7 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get -o Dpkg::Use-Pty=0 update
+          sudo rm -f /var/lib/man-db/auto-update
           sudo apt-get -o Dpkg::Use-Pty=0 install nasm
 
       - name: 'vcpkg build'
@@ -626,7 +627,9 @@ jobs:
       fail-fast: false
     steps:
       - name: 'install packages'
-        run: sudo apt-get -o Dpkg::Use-Pty=0 install libfl2
+        run: |
+          sudo rm -f /var/lib/man-db/auto-update
+          sudo apt-get -o Dpkg::Use-Pty=0 install libfl2
 
       - name: 'cache compiler (djgpp)'
         uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4

.github/workflows/windows.yml

@@ -565,6 +565,7 @@ jobs:
       - name: 'install packages'
         timeout-minutes: 5
         run: |
+          sudo rm -f /var/lib/man-db/auto-update
           sudo apt-get -o Dpkg::Use-Pty=0 install mingw-w64 \
             ${{ matrix.compiler == 'clang-tidy' && 'clang' || '' }}