Fix logic to install python packages for nosolvers builds

Author: jsiirola

.github/workflows/test_branches.yml

@@ -169,7 +169,7 @@ jobs:
             echo "GHA_JOBGROUP=other" >> $GITHUB_ENV
         fi
         EXTRAS=tests
-        if test -z "${{matrix.slim}}" -o "${{matrix.slim}}" -eq 1; then
+        if test -z "${{matrix.slim}}" -o "${{matrix.slim}}" = 1; then
             EXTRAS="$EXTRAS,docs,optional"
         fi
         echo "EXTRAS=$EXTRAS" >> $GITHUB_ENV
@@ -195,7 +195,7 @@ jobs:
 
     - name: TPL package download cache
       uses: actions/cache@v5
-      if: ${{ ! matrix.slim || matrix.slim == 1 }}
+      if: ${{ ! matrix.slim }}
       id: download-cache
       with:
         path: cache/download

.github/workflows/test_pr_and_main.yml

@@ -222,7 +222,7 @@ jobs:
             echo "GHA_JOBGROUP=other" >> $GITHUB_ENV
         fi
         EXTRAS=tests
-        if test -z "${{matrix.slim}}" -o "${{matrix.slim}}" -eq 1; then
+        if test -z "${{matrix.slim}}" -o "${{matrix.slim}}" = 1; then
             EXTRAS="$EXTRAS,docs,optional"
         fi
         echo "EXTRAS=$EXTRAS" >> $GITHUB_ENV
@@ -248,7 +248,7 @@ jobs:
 
     - name: TPL package download cache
       uses: actions/cache@v5
-      if: ${{ ! matrix.slim || matrix.slim == 1 }}
+      if: ${{ ! matrix.slim }}
       id: download-cache
       with:
         path: cache/download